Bloom

YC X25 · Active · Build and share mobile apps in seconds

Competitors

Companies closest to Bloom
Company	Category	Status	Program
Rosebud AIShared: vibe code, letsActiveAI, Devtools	AI, Devtools	Active	YC +1S19
VibeShared: vibe codeActiveAI, Devtools	AI, Devtools	Active	YCS24
ElseShared: vibe codeNot statedAI, Devtools	AI, Devtools	Not stated	speedrunSR003

Adjacent

Companies next to Bloom
Company	Category	Status	Program
JinbaShared: vibe code, letsActiveAI	AI	Active	YCW26

Also from X25 in Developer tools

All of X25

Company	Category	Status
AravoltaSoftware to monitor, control, and optimize data centers.ActiveDevtools	Devtools	Active
Better AuthThe authentication framework for TypeScriptActiveDevtools	Devtools	Active
PrismAbundant Intelligence for EveryoneActiveDevtools	Devtools	Active
RefreshTraining gyms for computer use and software engineering workActiveDevtools	Devtools	Active
Vassar RoboticsOpen-source semi-humanoid dev kit → home data → autonomy → 20h/wkActiveDevtools	Devtools	Active

Founders

David Oort AlonsoFounder/CEO
Sirian MaathuisFounder

About Bloom

Bloom lets you vibe code cross-platform apps and test them on your phone natively in seconds. Unlike other vibe code tools, Bloom deploys a backend for you, so you can build functional MVPs and personal apps, not just toys. https://youtu.be/oeJCk_nwDZg

YC batch: X25 · Spring 2025
Status, per YC: Active
Category: Developer tools
Team size: 2
Founded: 2025
Checked: 1h ago

Bloom in X25: 143 companies, 89% AI

GitHub LinkedIn

Bloom: questions

Which YC batch was Bloom in?

Bloom was in Y Combinator's Spring 2025 batch (X25).

Is Bloom still active?

Y Combinator lists Bloom as active.

Who founded Bloom?

Bloom's founders, as listed on its YC page: David Oort Alonso (Founder/CEO), Sirian Maathuis (Founder).

Sources: each program's public company list, read twice a week. Not affiliated with Y Combinator or any other program. Logos via logo.dev; trademarks belong to their owners.